COLT Telecom Group Plc Announces Schedule 5 Block Listing Six Monthly Return


LONDON, Oct. 22, 2004 (PRIMEZONE) --



                                SCHEDULE 5
                      BLOCK LISTING SIX MONTHLY RETURN

 To:  Listing Applications
      UK Listing Authority
      Financial Services Authority
      25, The North Colonnade
      Canary Wharf
      London, E14 5HS


         Please ensure the entries on this return are typed


 1.  Name of company     COLT Telecom Group plc

 2.  Name of scheme      2% Senior Convertible Notes due 2005 and 2006

 3.  Period of return:   From 22.04.2004 to 22.10.2004

 4.  Number and class of share(s) (amount of
     stock/debt security) not issued under scheme           23,083,311

 5.  Number of shares issued/allotted under scheme during
     period:                                                         0

 6.  Balance under scheme not yet issued/allotted at end of
     period                                                 23,083,311

 7.  Number and class of share(s) (amount of stock/debt
     securities) originally listed and the date of          35,646,824
     admission;                                             22.10.1999

 Please confirm total number of shares in issue at the end of the
 period in order for us to update our records   1,511,021,176

 Contact for queries:                     Address: Beaufort House
 Name: Adrian Goodenough                  15 St. Botolph Street
 Telephone: 020 7947 1677                 London EC3A 7QN

 Person making return
 Name: Adrian Goodenough
 Position:
 Signature:

                  This information is provided by RNS
       The company news service from the London Stock Exchange


-0-
Contact for queries:
Name: Adrian Goodenough
Telephone: 020 7947 1677